how to filter awgn

is there any way to filter awgn noise from my signal.

I tried using the function smooth(signal) but it totally distorts my data.

x = randint(100,1,8); % Random signal

signal = qammod(x,8);

add_noise=awgn(signal,10);

filternoise=smooth(add_noise);

Answer 1

[Kaustubha Govind]

SMOOTH simply performs a moving average on the signal, which is not sufficient to remove white noise. You need a filter designed to remove white noise. For example, the DSP System Toolbox Acoustic Noise Cancellation demo uses the LMS algorithm to achieve this.